Gear-generator.



E. J. LEES.

GEAR GENERATOR.l

APPLICATION IILsD AUG. 27, 1913.

1, 1 08,379 Patented Aug. 25, 1914.

Unifrans'mriis ..1)ATENT vonirica.

J. LEES, or oLEv'nLaNn, omo, .assienoia- 'ro rien iiniismm'nnnii suivirent?,

or onnvnnnnnonio, a Coupon-Arion or onto.

enan.-.ennnitaron.

Aini-iisere.

Specication oi" Letters Patent..

Application siefiaugusta, i913. serial No. 736,931.

the best'mode in which I-have eontein plated applying that principle, so as todistingui-sh it fromv other inventions.

:My 'invention 4relates to gear generators and particularly to that feature of the latter which relates to mechanism :for changing the speed vof rotation of the'vork-rotating spindle.' -v i 'miei-said invention relates vto a 'specific feature shown and described inilatent No. 1,071,163 issued to me Aug. 26, 1913xand consists of means hereinafter-fully 'described and particularly set. forth in the claims.' l The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however,1 constituting but one of various mechanical forms in which the principle of theinvention may be applied.

Insaid annexed drawings Figure 1 is a. horizontal section of a gear generating machine embodying niv invention. Fig. Q is a vertical section taken upon the plane indicated by line .1L-II in Fig. 1. Fig. 3 is a bottom plan of a. detail por-tion of the mechanism shownin Fig. Q. Fig'. 4- is a vertica-l fragmentary section taken upon the plane lindicated by line IV-IV in Fig. 1.

Aspt'ully described in mv above mentioned original application, the illustrated gear generator includes a work-holding and rotating spindle C. to the inner end of which the VWork is suitably secured. Suitably mounted is the main Work-rotating driving- Shaft C to 'which is tixedly secured a helical p gear 021, Figs. 2 and 3, this gear engaging with V.a second helical gear c fixedlv sel cured to the lower end of a vertical spindhl C7.- T his'latter spindle vis mounted in suity able bearings formed in a housing C8, which A'itself forms a part of the frame ot the workholding Slide, but is made separate there from and movably adiustable in a direction transverse with respectto the. direction ofv slide-feed movement. as shown in Fig. Q. housing is nrovided slots e2 c25, through which pass cap-screws c2, by

means of' which the housing may be fixed to the main frame of theslide (l, as lwill be readil)T understood. A

Intermediate-ly of the ends ot' `the spindle CT 1s formed or secured a `Worm C9, `which engages a wormew'heel Cw fixed to the Work- .rotating spindle C, as shown in Figs. l

and 2. This ivornrwheel forms one element .ot a .compound gear, the other element of Patented Auw. 25, 1914.`

which consists of a. spur-gearC, Figs. 3

and 4. Slidably mounted upon the shaft C6, Fig. 4t, is an auxiliary pinion c, which, when the Worm is engaging the wormwheel, is held in a fixed positioii'by means of-a pin 02"'- passing through an adjacent4 portion of the slideframe and into an aperture formed in the pinion, as shown. The relationship of the spurgear member C- With the pinion@4 is such that the latter, by

removing the pin c25, may be slid into en*V 1t will theregageinent with the former. fore be seen'tln-it the Work-holding spindle may be driven by the shaft C either through the medium ot the ivoii'm-wheel and Worm, or through the medium ot' the spurgear and pinion. In the latter case, the housing` CS is slid over so as to disengage the Worm from the worm-wheel, as will be readily7 understood. prevent any uni'iremeditated attempt, through carelessness, to drive the pinion simultaneouslyY through the medium of botl.` sets of driving mechanisms, which 'would result in abrealiage ot' parts, the housing is provided with a lug cehlFig. 3, which, When the worin is in engagement with the Worm- Wheel, projects into the path of sliding movement of the pinion c, thereby pre venting the latter 'from being placed into engagement with the spur-gear C until suchhtinie as the ivorm is disengaged from the worm-wheel bv sliding the housing in the manner previously described.

l'hen .it is desired to drive the workvholding and rotating spindle by means of the pinion and. spur-gear, and the former is slid into engagement with the latter, the said pinion is rigidly secured to the shaft C5 by means of the pin c25 previously removed. This pin, utter the pinion has been given its correct meshing position, is i passed through a transverse bore c 'formed in the pinions body, whichregisters, under these In order, however, to.

formed in theishaft C", :is shown in dotted lines in Fig. 4. It will therefore be seen that by means of the above-described arrangement of parts, the work-rotating spindle ma)v be driven at a given rate of speed by the worin C9 and Worin-wheel C10, or :it an increased rate of l'speed through fthe medium of the gear C and pinion e.

As fully described in my above'nientioned original application, the main work-rotating driving shaft C is driven by the pulley G through intermediate shafts and gear' ing, this ulle)v also driving, through snitable nie-c anism, the cutter spindle `B11 "mounted upon the adjustable head B', Fig. 1.

respect to its axis; aV spindle connected with said Worm adapted to drive same; and a' pinion movably mounted upon said spindle so as to be capable of being brdught into or but of mesh Ywith said' spur-gear element;

and Vmeans for rotatably connecting said pinion with or disconnecting same from saidI spindle. i

2. In a gear-generating machine, the Jcombiiiation of a main work-holding slide-mein'- bei; a Work-rotating spindle rotatably mounted in said lslide member: a compound gear comprising a. mirni-wlieel 'element and ai spur-gear element: :i housing slidably mounted upon said main .workdioldixig slide-member` and having :i direction' ot' 'movement transverse wit-li respectto thedirection of sliding movement of said slide'- niember; a spindle mounted in said bonsing: awo'rm ixedlysecnied yto said spindle and adapted to engage the worm-wheel element. of saideompound gear: a drivingspindle mounted in said main slide-member,

andha-i'ing its axis parallelwith theiaxis of saidwoi'k-rotatingspindle; a screiingear,

mounted upon- Vvs'aid driiii'ig-spiiidle: a screw-gear mounted uponsaid worm-spin? dle' and meshing with rst-nained screwgear; -a lug xedly secured to oi' integral with said housing; a pinion slidabl)- mounted upon -siiid driving spindle 'y and adapted to engage said spur-gear element of said compound gear: and means for rotatabljvv connecting' said pinion with said spindle anddisconnecting saine tliei'et'i'oni:

lio

said projection lying in the path of Vsliding i moi-ement of said pinion when said Worin is in engagement with said worni-iilieel.

.Signed-1 v me. this lst day of August,

' VERNEST J. LEES. Attested byvHERMAN Eisinnii, NATHAN F. FRE'i'rER. 

